DocumentCode :
37278
Title :
Optimal Sensing Strategy Against Collision With Primary User in Cognitive Radio Systems
Author :
Wha Sook Jeon ; Junrong Gu ; Dong Geun Jeong
Author_Institution :
Dept. of Comput. Sci. & Eng., Seoul Nat. Univ., Seoul, South Korea
Volume :
64
Issue :
3
fYear :
2015
fDate :
Mar-15
Firstpage :
1230
Lastpage :
1235
Abstract :
The cognitive radio (CR) system needs to optimally set the sensing period and sensing time, to efficiently utilize the channel while protecting a primary user (PU). The optimal sensing period for maximizing the effective throughput of the CR system depends on not only the on/off pattern of the PU and the sensing error probabilities but also the size of a data packet, the transmission rate, and the forward error correction capability. In this paper, we mathematically derive the optimal sensing period while taking all of these factors into account. On the basis of this optimal period, we design the sensing strategy under which the CR user has the breaks for sensing during a data packet transmission. With the proposed sensing strategy, the CR system can protect the PU very well while achieving the high effective throughput.
Keywords :
cognitive radio; data communication; forward error correction; CR system; cognitive radio systems; data packet transmission; forward error correction capability; optimal sensing period; optimal sensing strategy; primary user; sensing error probabilities; transmission rate; Forward error correction; Niobium; Receivers; Sensors; Signal to noise ratio; Throughput; Transmitters; Cognitive radio (CR); effective throughput; optimal sensing period;
fLanguage :
English
Journal_Title :
Vehicular Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9545
Type :
jour
DOI :
10.1109/TVT.2014.2328626
Filename :
6825896
Link To Document :
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